In ASP. NET, check whether checkboxlist is selected on the client.

In ASP. NET, check whether checkboxlist is one of the methods:
<Script language = "JavaScript">
<! --
Function checkform (){
VaR chk = false;
VaR inarr = form1.all. Tags ("input ");
VaR num = inarr. length;
For (VAR I = 0; I <num; I ++ ){
If (inarr [I]. type = "checkbox "){
If (inarr [I]. Checked = true)
{
Chk = true;
Break;
}
}
}

If (chk = false ){
Alert ("select a subject! ");
Return false;
}
Document.form1.tar get = "_ blank ";
Return true;
}
-->
</SCRIPT>
In ASP. NET, check whether method 2 is selected for checkboxlist on the client:
For (I = 0; I <10; I ++ ){
If (eval ("document. getelementbyid (subject _" + I + ")"). Checked = true ){
Return true;
}
}